Flying Shear application with rotary knife

[JamesWSY]

Hi..
I have flying shear application using rotary knife. The line speed is 100 FPM and rotary knife using Vector motor with Inverter for speed control. I use 2000 PPR encoder to measure material length. If material length reached setpoint then knife motor will on to move knife edge to match up the target. After cutting process, knife edge will back to home position. I used PLC-5 as master speed ref.
I need the sample program or ideas on how to setup the knife speed to macth up the Target.
Thanks.
James

 

[SNK]

Rockwell has some Flying shear sample applications on their website. Sorry, I don't have the link. I remember seeing them though in the past.

 

[mgvol]

Rockwell Flying Shear application example is here:

http://samplecode.rockwellautomation.com/idc/groups/public/documents/webassets/sc_browse_results.hcst?industryFlag=true&Industry=Machine%20Builder%20%2d%20OEM

This one uses ControLogix and servos, but you may be able to glean some insight from it.

 

[SimonGoldsworthy]

The flying shears I have come across are implemented in a motion controller (Baldor for example), the plc controls line speed and repeat length/flying shear parameters.

 

[DickDV]

rsdoran would likely be a good contact on this. Ron--come in please!

 

[rsdoran]

Dick thanks for that but I have never done it using an inverter, its always been a servo and motion controller.
http://domino.automation.rockwell.c...4ea644/$FILE/The flying shear application.doc